System of electrical control.



No. 888,557.; PATENTED MAY 26, 1908.

4 H. L. VAN VALKENBURG;

SYSTEM OF ELECTRICAL CONTROL.-

A PPLIOATI'ON nun SEPT. 2. 1904.

TTONEY UNITED STATES PATENT OFFICE,- HERMON L. VAN VALKENBURG, or PITTSBURG, PENN'svLvANIA, AssieNon "r0 WESTING- HOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

sys'rnm or ELECTRICAL coN'moL.

' Specification of Letters Patent.

Patented May 26, 1908.

Application filed September 2, 1804. Serial No. 228,140.

To all whom it may concern:

Be it known that I, HERMON L.v VAN VALKENBURG, a citizen of the United States,

and a resident of Pittsburg, inthe county of Allegheny and Stateof Pennsylvania, have invented a new and useful Improvement in operation of the unit switches b successive operation of a manually contro ed master switch.

A further object is ,to materially simplify and lighten the apparatus'required to control electricrailway motors. a The single figure of the accompanying drawing represents, diagrammatically, a system constructed in accordancewith my mvention.

1t is-to'be un erstood that a two-winding One terminal ofian auto-transformer wind-- ing 1 is connected, directlypr indirectly, to a trolley-2 and an intermediate point3, near its other terminal, is connected to the rail or rounded conductor 4. The auto-transormer winding 1 is subdivided by means of.

leads 5, 6 and 7, between which and terminal 8, motors 9 or other translating devices are adapted to be connected, the circuits through the motors bein governed by means of electrically operate switches 10, 11, 12, 13, 14 and15. 3 While I have shown the motors 9 as suplied with ener y from an auto-transformer,

transformer may be em loyed instead, the

secondary winding of which is subdivided in a manner similar to that here shown,'or that the motors may be supplied from a source of direct current energy, the o eration of my invention not being .depen ent upon the character of the energy supplied to-the motors or upon the specific meansemployed fo 5 su lying energythereto. f

llie switches 10, 11,- 12, 13,14'and 15 I are shown-as operated by means of magnet coils 16, 17, 18, 19, 20 and 21, respectively,

though, if desired, they may 'be operated pneumatically, the said coils serving to ,op-

erate valves which control the supplg of elastic fluid to the operating cylinders.

10, 11, 12, 13 and 15 are respectively rowitches vided-with magnet coils 22, 23, 24, 25 an 26,

terlocking switches 32, 33, 34 and 35 are operated by means of the; switches 10, 11, 1'2 and 14, res ectively, all of these switches opening w en the corresponding main switches are closed. Interlocking switch 32 prevents energizing of the magnetv coil 18 while the main switch 10 is closed and interlocking switch 34 prevents energizing of the ma net coil 16 When the main switch 12 is in a c ose'd position. Interlocking switch 33 prevents energizing of the retainjn magnet coil 22 when t emain switch 1'1'is c ose'd' and interlocking switch 35 prevents energi the retainin magnet coils 25 and26 w 'en the main'sw1tch 14 is'closed;

,The circuits of the operatin'g magnet' coils 16, 17,-etcl, are, governed by means of. a set ofv of relay switches '36, 37, 38'";E39 .j.40','41=, 42, 43

and 44, the circuits of the Q er'ating magnet coils of which are governe bymeans of a second set of relay switches 45, 46, 47, :48, 49, '50, 51, 52 and53.-- By the successive closing of the masterswitch 54, the operating magnet coils of therelay switches 45, 46', etc. are

energized from a battery or successivel other suita le source of electricallenergy b,'if the remainder of the circuits of thecontrol system are properl established, as-will be hereinafter more ly-set forth. The reversing switch 55, which'governs th ats circuits; of the motors or other translating devices 9, is operated by means of magnet.

coils 56 and 57, the circuits of the magnet coils being governedby means of a switcharm 58, which is adapted to make contact with either of contact terminals 59 or 60, the

magnet coil 56 being energized if the switch arm 58 engages the contact terminal 59 and the magnet coil 57 being energized if the arm 58 engages the contact terminal 60.

' Mounted upon and operated by the reversing switch 55, is a switch 61, which governs the circuit of an operating coil 62 for a switch 63. The operating magnet coil 62- cannot' be energized until the reversing switch 55 is in either its forward or its reverse osition and the switch 63, which governs t e suppl of energy to the main'switch operating an retaining magnet coils, cannot be closed. The interlocking switch 61 serves also to prevent energizing of the operating magnet windings of the relay switches 36 to 44, inclusive, unless the reversing switch occupies either its forward or its reverse position. v

.To effect operation of my system, the switch-arm 58 must first be moved to make contact with either terminal 59 or terminal 60, thereby causing movement of the reversing-switch 55 to either its forward or its re.-

. verseposition, as desired. The operation of the reversing switch 55 also effects operation of the switch 61, thereby completing the circuit of the operating magnet coil 62 and closing the switch 63, so that energy may now be supplied to the operating and retaining magnet coils of the main switches 10, 11, 12, etc. Then if the master switch 54 is closed, a circuit is established from the positive terminal of the battery 6, through the master switch 54, the relay 0' crating coil 64, right-hand contact termina s of switches 36 to 44, inclusure, in their lowermost positions, to the negative terminal of the battery 6. Energizing of the coil 64 causes the switch 45 to occupy its uppermost position and a circuit is thereby established lrom the'positive terminal of the battery, through switches 58 and 61, relay magnet coil 65, right-hand contact terminals of relay switch 45 in its uppermost position and right-ha fl contact terminals of switches 37 to 44, inclusive, in their up ermost positions, to the negative termina of the battery. When the switch 45 is moved to its uppermost position, the circuit which was previously established through the operating coil 64 1s interrupted and a circuit established from the positive terminal of the battery, through the master switch 54, operating coil 64 and the middle contact terminals of the relay switch 45 in its u permost position, to the negative terminal or the battery. This circuit remains established so long as the master switch 54 is held in the closed position. Switch 36' is moved to its up ermost position by the energizing of the coi 65 and thereby completes a circui "from the positive terminalof the battery, th ough the leftehand contact terminals of the switch 86 in its uppermost position, to the point 69, where the circuit divides, one ortion traversing operating magnet win ing 19 and switch 63 to the negative terminal of the battery, and the other portion traversing the left-hand contact terminals of the switch 41 in its lowermost position, operating magnet winding 16, interlocking switch 34 and switch 63, to the negative terminal of the bat tery. Switches 10 and 13 are then closed and energy is supplied to the translating devices 9 from the lead 5 of the auto-transformer winding 1, through switch 10, resistance 66, switch 13, reversm switch 55, and motors 9, to the terminal 8 o the auto-transformer winding 1. When the relay switch 36 is moved to its uppermost position, the

circuit previously established throu h the uppermost position while the reversing switch occupies either its forward or its reverse position. When the master switch 54 is again opened, the switch 45 drops to its lowermost position, and if the master switch is again closed, a circuit is established from the positive terminal of the battery, through the master switch 54, left hand-contact terminals of the relay switch 45 in its lowermost. position, operating coil 67, middle contact terminals of the switch 36 in its up ermost position, right-hand contact terminals of switches 37 to 44, inclusive, in their lower-' most positions, to the negative terminal of the battery. Energizing of the coil 67 ef fects movements of the switch 46 to its u permost position, which thereby restaliiishes the circuit of the operating coil 67 from the positive terminal of the battery, through the master switch 54, right-hand contact ing coil 68, right-hand contact terminals of switch 46 in its uppermost position and righthand contact terminals of relay switches 38 to 44, inclusive, in their lowermost positions, to the negative terminal of the battery. Energizing of the coil 68 causes movement of the relay switch 37 to its uppermost position and thereby establishes a circuit from the positive terminal of the battery, through 'left and contact terminals of the relay switch 37 in its uppermost position, operating magnet winding 20 and switch 63, to the negative terminal of the battery. The operating magnet winding 20 is then energized and the switch 14 is operated to remove a portion of the resistance 66 from the motor circuit.

If the switch 54 is opened and closed successively, the operation of the sets of relay switches36, 87, 38, etc., and 45, 46, 47, etc.,

continues in a manner similar to that just described. In the further operation of the system, the main switches 10' and 15, 11 and sea-s57 '15, 11mm 14, i2 and 13, 12 and'14 and 1'2 and 1-5- are closed in the order just recited. In order to return the system" to its original condition, it is only necessary to open the switch 38.-

While I have. shown specific devices arrangements of theirconnections, I desire it tobe understood that these are only illustrativeofthe combinations which are possible with the elements comprising my system, and I wish-my invention tobe construed to cover any other'operative arrangement and f connections of the elements herein shown 'andz'described.

I I claim as my invention: V.

1-. In a system-of control, the combination with main and auxiliary sourcesof electrical energy, a translating-device or devices, and

unit switches in the circuits thereof, of 0 erating and retaining coilsfor said unit switc es, interlocking switches which are operated by the unit. switches, a set of electrically operated relay switches which'governthe circuits of. the operatin f c oils, a second set of el'ectricallyoperate relay switches in the operatingcircuits of the aforesaid relay switches anda master switch which controls the operating circuits of the last named. relay- Switches, a

- 2. In a'system of control, the combination with main and auxilia sources of electrical energy, a translating evice or devices and unit switches in the; circuits thereof, of 0 erating and retaining coils for said unit switc es,

interlocking switches which are operated by.

the unit, switches, a set of electrically operated relay switches which govern the circuits of the operating coils, a second set of electrically operated-relay switches inthe operating circults of theaforesaid relay'switches,

a master, switch which controlsthe operatin circuitsof the last named rela switches an an electricall operated inter ocking switch which is in t e circuit of the said operating and retaining coils.

3,, In ajsystem of; cont r ol, the combination with main and-auxiliary sources of elec trical energy, a translating device or devices and unit-switches in-thecircuits thereof, of

operating and retaining coils for said unit switches interlocking I switches which are operated by the unit. switches, a set of electrically operated relay switches which govern the circuits of the operating coils, a second set of electrically operated relay switches in-the circuits of the aforesaid relay switches, a

master switch which controls the operating circuits of the last named relay switches, an electrically operated interlocking switch which is in thecircuit of the said operating and retainin coils and a reversing switch which Icontro s the operating circuit thereof and the circuits of the said translating device or devices. Y

4. In a system of-control, the combination with main and auxiliary sources of electrical energy, a translating device or devices and unit switches in the circuits thereof, of 0 e1- ating coils which control said unit switc es, retaining coils for said unit switches, interlocking switches which are operated by the unit switches, a set of-electrically operated relay switches which govern the circuits of the operating coils, a second set of electrically operated relay switches in the operating circuits of the aforesaid switches and a master switch which controls the operating circuits of the last named set of switches.

5. In a system of control, the combination with a source or sources of electricalenergy, a translating device or devices, and electrically operated switches in the circuits thereof, of a set of electrically operated relay switches which govern the operating circuits and a master switch which controls the operating circuits of the last named set of relay switches.

6. In a system of control, the combination with a source or sources of electrical energy,-

in the circults thereof, of operating and retaining coils for said switches, a set of electrically operated relay switches in the circuits of said operating coils, a second set of relay switches which control the operating circuits of the aforesaid set and a master switch in the o crating circuits of the last named set of switches by the successive closing of which the said set of switches maybe operated successively.

8. In a system of control, the combination with a source or sources of electrical energy, a translating device or devices and unit switches in the'circuits thereof, of operating and retaining coils for said unit switches, a

set of electrically operated relay switches which govern the circuits of the operating coils, a second set of electrically operated relay switches in the operating circuits of the aforesaid relay switches, a master switch which controls the operating circuits of the last named set of relay switches, a reversing switch in the circuits of said translating device or devices and an electrically operated interlocking switch in the circuits of said opcrating and retaining coils, the circuit of which is controlled by the operation of said reversing switch.

9. In a system of control, the combination with a source or sources of electrical energy, a transla device or devices and unit switches retaini' coils for said unit switches, a

reversing switch in the circuits of the saidswitches, a reversing switch in the circuits of.

thesaid translating device or devices and means for preventing energizing of the retaining coils unless the reversing switch is in either its forward or its reverse position.

11. in a system of control, the combination with a source of electrical energy, a translating'device or devices and switches in the circuits thereof, of operating coils for said switches, controlling means for said operating coils, a master switch governing said means, a reversing switch in the circuits of the said translating device or devices, and means for preventing energizing of said operating coils unless the reversing switch is in either its forward or its reverse position.

in a system of control, the combination of a series of main circuit switches, a series of interlocking switches operated thereby, a series of relay switches, and a master switch.

13'. In a system of control, the combination of a series of main circuit switches, a series of interlocking switches operated thereby, a series of relay switches, a reversing switch and a master switch. I

14. In a system of control, the combination of a series of main circuit switches, a

seriesof interlocking switches operated thereby, a series of relay switches, a reversing.

switch, an interlockingswitch operated thereby, and a master SW'ltCh.-' I

15. In a system of control, the combination of a series ofmain. circuit switches, a

series of interlocking switches operated there-- by, a series of relay;'=switches, a reversing switch, means governed thereby for prevent- .16 circuits thereof, of operating switches, of a set ofinterlocking switches operated thereby which prevent the simul--' taneous closure of alternate switches of said main set. V I

'17. In a system of control, the combination with a translating device, main switches and a reversing switch in the circuits thereof, of two sets of electrically o erated relay switches, and means operated iiy the reversing switch for preventing the operation of one set of said relay switches until the reversing switch has beenmoved to either its forward or its reverse position.

18. In a system of control, the combination of main circuit-switches, operating and retaining magnet windingstherefor, inter locking switches operated thereby, relay switches, a reversing switch, means governed thereby for preventing the operation of certain of said relay switches and the ener gizing of the retaining magnet windings until the reversing'switch has been moved to either its forward or its reverse position, and a master switch.

19. In a system of control, the combination of a set of maincircuit switches, operating and retaining magnet windings therefor, a set of interlocking switches o erated by certain of said switches to controfcircuits to corresponding retaining magnet windings, and a set of relay switches.

20. In a system of control, the combination of main circuit switches, operating and retaining ma net windings therefor, interlocking switches operated by said switches which control circuits to the corresponding retaining magnet windings and which prevent simultaneous closure of certain ofsaid switches, circuit changing switches, operating magnet windings therefor, and interlocks ing switches which prevent simultaneous closure of said switches. 1

In. testimony whereof, I have hereunto subscribed my name this 23rd day of August "1964.

HERMON. 1i. VAN VALKENBURG. 

